Appearance: 5'4" with curly hair dyed blonde and left in a wild cloud around her head. Helena is pale with dark circles under her eyes and raw self-inflicted scars on her back with the loose appearance of wings.
Abilities: Helena appears to have been engineered with a more-than-human ability to heal from injuries, given the number of times she's survived things that should have killed her. She is strong and quick, but not superhumanly so. And her internal organs are mirrored, which is not so much an ability as an occasionally lucky genetic quirk.
Personality: Helena is oddly childlike and playful given that she is also a ruthless killer, possibly because she has been so thoroughly controlled, abused, and monitored until recently. She loves food but has absolutely appalling table manners. She loves children. She is unsettlingly tactile and curious. She is capable of being very gentle, but her first instinct is usually violence. She is not a great liar, though that does not stop her. When stressed or driven to it, she exhibits obsessive behavior, with somewhat disturbing rituals (self-harm, writing on walls, and mutilating dolls, for example.)
History: Helena is one of a number of clones birthed from an experiment known as Project LEDA. Nurture has done a number on Helena. She was given to a Ukranian convent shortly after birth and raised in a very upsetting and abusive environment for her early childhood. When she was twelve, she was found and kidnapped by two Prolethean religious fanatics, Maggie Chen and Tomas, who took over raising her. In this case, "raising" means "tortured and honed into a killing machine." Their twisted beliefs combined with her time in the convent gave her a very peculiar set of religious delusions of her own, most particularly that she was special and that God sent her to track down and kill the other clones: "abominations," as they were put to her.
She did a very good job, killing eight monitored clones, until she met Sarah Manning, who turned out to not only be one of the Project LEDA clones, but her identical twin: they were both split from the same zygote after it had been implanted into their surrogate mother, who went on the run and split them up after birth to protect them. Helena felt the connection between them and let Sarah live, which the Proletheans did not take kindly to. Her handler Tomas attempted to get her to use Sarah's daughter Kira as a lure, which Helena nearly did but changed her mind. Tomas punished Helena for this severely upon learning that Kira was Sarah's biological daughter--an impossibility for clones who were designed to be infertile. Once free from the Proletheans she killed her and Sarah's birth mother, telling her, "You let them make me this way." Sarah in turn shot Helena, leaving her for dead.
However, Helena was not dead! She should have been, but a rare quirk of nature means that her internal organs are mirrored, and so shooting her in the heart... was not in fact shooting her in the heart. Oops. Helena dragged herself to a hospital, where she was treated and located by the Prolethean cult, who retrieved her and brought her back to their compound. She was viewed there by their leader Henrik as a miracle whose eggs should be used to populate the earth with miracle children; she was viewed by his daughter Gracie and many other cult members as a soulless abomination, as the Prolethean religion is staunchly anti-clone. While Helena was still recovering, Henrik sedated her, performed a "marriage" ceremony, and removed some of her eggs. Gracie did not like this and tried to smother Helena.
Helena did not like this and escaped, saving Sarah's life in the process. Sarah, having thought that she had killed Helena, was understandably upset by this, but also had a whole lot of other things to worry about and left her in the custody of her adopted brother Felix--or "brother sestra" as Helena began to call him. Helena let a few things slip while she stayed there, namely that the "Swan Man" was interested in them. The "Swan Man" was one of the original creators of Project LEDA, and the adoptive father of another clone named Rachel, who Helena helpfully tried to assassinate as Rachel had been causing trouble for Sarah and the Clone Club. Sarah talked her down. She and Sarah began to bond while on a road trip to a facility in Cold River, but she got in a bar fight, ended up in jail, and was bailed out by... PROLETHEANS.
She was taken back to their compound and told that she was being taken to see her babies--the eggs that had been removed from her, now fertilized. Some were implanted into her, and she discovered that some were implanted into Gracie, who had tried to smother her some time back. This meant, logically, that Henrik was the father of the children who were implanted into his own daughter. This reminded Helena all too much of the people that she was raised by, who twisted children for their own desires, and caused her to turn on Henrik and the Proletheans. She allowed Gracie and Gracie's boyfriend Mark to escape, then turned on Henrik, violating him with the machinery that he'd used in the artificial insemination process and then killing him before burning down the Prolethean ranch and returning to Sarah. She finally met her other clone sisters, Alison and Cosima, and things seemed to be going well for once in her life.
Traumas: The orphanage that Helena was raised in was an abusive environment. At age seven she was "put in the dark"--presumably locked somewhere dark for a period of time. She has had her lips sewn shut as punishment, been encouraged to self-mutilate as a form of penitence, been shot, stabbed, had medical procedures done to her against her will, caged, and lied to, all in order to twist her into an assassin. The physical damage does not seem to have affected her much--she told Gracie that she'd get over having her lips sewn shut--but the mental abuse has stayed much longer. She was told for almost two decades that she was special and had a purpose; being told that she is soulless would be painful. And now that she has people that she identifies as family after being alone for so long, she fears losing them.